JSON Schema Generator: Create Schemas from JSON Data

Need a JSON Schema for validation? Our JSON Schema Generator analyzes your sample JSON and produces a complete schema with types, required fields, and structure definitions.

How to Use

1. Paste a sample JSON object into the input
2. See the JSON Schema generated automatically
3. Copy the schema with one click

Common Use Cases

• API validation: Create schemas to validate API request/response bodies
• Form validation: Generate schemas for frontend form validation
• Documentation: Define data structures in your API docs
• Data contracts: Establish clear data format expectations between services

Frequently Asked Questions

What schema version is generated? The tool generates Draft 7 JSON Schema, which is widely supported by validators.

Does it detect required fields? By default, all fields present in your sample are marked as required. You can adjust this in the output.

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Try our free JSON Schema Generator now.